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Effective Income tax (Detail)	12 Months Ended
Effective Income tax (Detail)	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Schedule Of Effective Tax Rates Line Items
U.S. federal statutory income tax rate	35.00%	35.00%	35.00%
Effective state income tax rate	4.20%	4.10%	4.10%
Impact of foreign operations	(0.90%)	(0.60%)	(0.50%)
All Other	(0.30%)	(0.50%)	(0.50%)
Worldwide effective income tax rate	38.00%	38.00%	38.10%

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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